After the various headaches I ran into using Sketchup to make models, I decided to get Alibre. I had heard it was similar to ProE Wildfire, which I use at work. It is similar, but still fairly different. I decided to make the biggest thing that my Up! could print. It is a 5" cube. I fancied I had made it with a minimal amount of material. Now I know that I can actually print a 45° undercut without support material, so I could have put a bunch of holes through it. Oh well. Live and learn.